<template>
    <div>
        <!-- 面包屑导航区域 -->
        <el-breadcrumb separator-class="el-icon-arrow-right">
          <el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item>
          <el-breadcrumb-item>用户管理</el-breadcrumb-item>
          <el-breadcrumb-item>用户列表</el-breadcrumb-item>
        </el-breadcrumb>
        <!-- 卡片视图区域 -->
        <el-card >
          <!-- 搜索与添加区域 -->
          <el-row :gutter="20">
            <el-col :span="8">
              <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
                <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
              </el-input>  
            </el-col>
            <el-col :span="6">
              <el-button type="primary" @click="dialogVisible=true">添加用户</el-button>
            </el-col>    
          </el-row>
          <!-- 表格 -->
          <el-table :data="userList"  border stripe>
            <el-table-column type="index" ></el-table-column>
            <el-table-column prop="username" label="姓名" ></el-table-column>
            <el-table-column prop="email" label="邮箱"></el-table-column>
            <el-table-column prop="mobile" label="电话"></el-table-column>
            <el-table-column prop="role_name" label="角色"></el-table-column>
            <el-table-column  label="状态">
              <template slot-scope="scope">
                <el-switch v-model="scope.row.mg_state" @change="userStateChange(scope.row)"></el-switch>    
              </template>
            </el-table-column>
            <el-table-column  label="操作" >
              <template slot-scope="scope">
                <el-button type="primary" icon="el-icon-edit" @click="showEditDialog(scope.row.id)"></el-button>    
                <el-button type="danger" icon="el-icon-delete" @click="removeUserById(scope.row.id)"></el-button>    
                <el-tooltip  effect="dark" content="分配角色" placement="top" :enterable="false">
                  <el-button type="warning" icon="el-icon-setting" 
                  @click="setRole(scope.row)"></el-button>
                </el-tooltip>    
              </template>
            </el-table-column>
          </el-table>
          <el-pagination
            @size-change="handleSizeChange"
            @current-change="handleCurrentChange"
            :current-page="queryInfo.pagenum"
            :page-sizes="[1, 3, 5, 10]"
            :page-size="queryInfo.pagesize"
            layout="total, sizes, prev, pager, next, jumper"
            :total="total">
          </el-pagination>
          <!-- 添加用户的对话框 -->
          <el-dialog
            title="添加用户"
            :visible.sync="dialogVisible"
            width="50%" @close="addDialogClosed">
            <!-- 内容主体区域 -->
            <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px" >
              <el-form-item label="用户名" prop="username">
                <el-input v-model="addForm.username"></el-input>
              </el-form-item>
              <el-form-item label="密码" prop="password">
                <el-input v-model="addForm.password"></el-input>
              </el-form-item>
              <el-form-item label="邮箱" prop="email">
                <el-input v-model="addForm.email"></el-input>
              </el-form-item>
              <el-form-item label="手机" prop="mobile">
                <el-input v-model="addForm.mobile"></el-input>
              </el-form-item>
            </el-form>
            <span slot="footer" class="dialog-footer">
              <el-button @click="dialogVisible = false">取 消</el-button>
              <el-button type="primary" @click="addUser">确 定</el-button>
            </span>
          </el-dialog>
          <!-- 修改用户对话框 -->
          <el-dialog
            title="修改用户"
            :visible.sync="editDialogVisible"
            width="50%" @close="editDialogClosed">
            <!-- 内容主体区域 -->
            <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="100px" >
              <el-form-item label="用户名" >
                <el-input v-model="editForm.username" disabled=""></el-input>
              </el-form-item>
              <el-form-item label="邮箱" prop="email">
                <el-input v-model="editForm.email"></el-input>
              </el-form-item>
              <el-form-item label="手机号码" prop="mobile">
                <el-input v-model="editForm.mobile"></el-input>
              </el-form-item>
            </el-form>
            <span slot="footer" class="dialog-footer">
              <el-button @click="editDialogVisible = false">取 消</el-button>
              <el-button type="primary" @click="editUserInfo">确 定</el-button>
            </span>
          </el-dialog>
          <!-- 分配角色对话框 -->
          <el-dialog
            title="分配角色"
            :visible.sync="setRoleDialogVisible"
            width="30%"
            @close="setRoleDialogClosed">
            <div>
              <p>当前的用户:{{UserInfo.username}} </p>
              <p>当前的角色:{{UserInfo.role_name}} </p>
              <p>分配新角色：
                <el-select v-model="selectedRoleId" placeholder="请选择">
                  <el-option
                    v-for="item in rolesList"
                    :key="item.id"
                    :label="item.roleName"
                    :value="item.id">
                  </el-option>
                </el-select>
              </p>
            </div>
            <span slot="footer" class="dialog-footer">
              <el-button @click="setRoleDialogVisible = false">取 消</el-button>
              <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
            </span>
          </el-dialog>
        </el-card>
    </div>
</template>
                
<script>
export default {
  data (){
    // 验证邮箱的规则
    var checkEmail = (rule, value, cb) => {
      // 验证邮箱的正则表达式
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+([a-zA-Z0-9_-])+/
      if (regEmail.test(value)) {
        // 合法的邮箱
        return cb()
      }
      cb(new Error('请输入合法的邮箱'))
    }
    // 验证手机号码的规则
    var checkMobile = (rule, value, cb) => {
      // 验证手机号码的正则表达式
      const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
      if (regMobile.test(value)) {
        return cb()
      }
      cb(new Error('请输入正确的手机号码'))
    }
    return {
      queryInfo: {
        query: '',
        // 当前是第几页
        pagenum: 1,
        // 每页显示多少条数据
        pagesize: 2
      },
      userList: [],
      total: 0,
      // 控制添加用户对话框显示与隐藏
      dialogVisible: false,
      // 控制修改用户对话框显示与隐藏
      editDialogVisible: false,
      // 添加用户的表单数据对象
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      // 添加用户表单的验证规则对象
      addFormRules: {
        username: [
           { required: true, message: '请输入活动名称', trigger: 'blur' },
           { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
        ],  
        password: [
           { required: true, message: '请输入密码', trigger: 'blur' },
           { min: 6, max: 13, message: '长度在 6 到 13 个字符', trigger: 'blur' }
        ],  
        email: [
           { required: true, message: '请输入邮箱', trigger: 'blur' },
           { validator: checkEmail, trigger: 'blur' }
        ],  
        mobile: [
           { required: true, message: '请输入手机号', trigger: 'blur' },
           { validator: checkMobile, trigger: 'blur' }
        ]  
      },
      // 查询到的用户信息对象
      editForm: {},
      // 修改用户表单的验证规则对象
      editFormRules: {
         email: [
           { required: true, message: '请输入邮箱', trigger: 'blur' },
           { validator: checkEmail, trigger: 'blur' }
        ],  
        mobile: [
           { required: true, message: '请输入手机号', trigger: 'blur' },
           { validator: checkMobile, trigger: 'blur' }
        ]  
      },
      // 控制分配角色对话框的显示与隐藏
      setRoleDialogVisible: false,
      // 需要被分配角色的用户信息
      UserInfo: {},
      // 角色列表
      rolesList: [],
      // 已选中角色的Id值
      selectedRoleId: ''
    }
  },
  created () {
    this.getUserList()
  },
  methods: {
    async getUserList (){
      const { data: res } = await this.$http.get('users', { params: this.queryInfo })
      if (res.meta.status !== 200){
        return this.$message.error('获取用户列表失败')
      }
      this.userList = res.data.users
      this.total = res.data.total
    },
    // 监听pageSize 发生改变的事件
    handleSizeChange (newSize){
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    // 监听currentPage发生改变的事件
    handleCurrentChange (newPage){
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    // 监听Switch开关状态变化的事件
    async userStateChange (userInfo){
      const { data: res } = await this.$http.put(`users/${userInfo.id}/state/${userInfo.mg_state}`)
      if (res.meta.status !== 200){
        // 如果修改状态失败，将页面上用户的状态再重置回去
        userInfo.mg_state = !userInfo.mg_state
        return this.$message.error('用户状态修改失败')
      }
      this.$message.success('用户状态修改成功')
    },
    // 监听添加用户对话框的关闭事件
    addDialogClosed (){
      this.$refs.addFormRef.resetFields()
    },
    // 点击按钮 添加新用户
    addUser (){
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) return false
        // 发起添加用户的网络请求
        const { data: res } = await this.$http.post('users', this.addForm)
        if (res.meta.status !== 201){
          return this.$message.error('添加用户失败')
        }
        this.$message.success('添加用户成功')
        this.dialogVisible = false
        // 重新获取列表数据
        this.getUserList()
      })    
    },
    // 展示修改用户的对话框
    async showEditDialog (id){
      const { data: res } = await this.$http.get('users/' + id)
      if (res.meta.status !== 200){
        return this.$message.error('查询用户信息失败')
      }
      this.$message.success('查询用户信息成功')
      this.editForm = res.data
      this.editDialogVisible = true
    },
      
    // 监听修改用户对话框的关闭事件
    editDialogClosed (){
      this.$refs.editFormRef.resetFields()
    },
    // 修改用户信息事件
    editUserInfo (){
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return false
        // 可以发起修改用户的网络请求
        const { data: res } = await this.$http.put('users/' + this.editForm.id,
        { email: this.editForm.email, mobile: this.editForm.mobile })
        if (res.meta.status !== 200){
          return this.$message.error('更新用户信息失败')
        }
        // 关闭对话框
        this.editDialogVisible = false
        // 刷新数据列表
        this.getUserList()
        this.$message.success('更新用户信息成功')
      })
    },
    // 根据id删除用户信息
    async removeUserById (id){
        const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err => err)
        if (confirmResult !== 'confirm'){
          return this.$message.info('已取消删除')
        }
        const { data: res } = await this.$http.delete('users/' + id)
        if (res.meta.status !== 200){
          this.$message.error('删除用户失败')
        }
        this.$message.success('删除用户成功')
        this.getUserList()
    },
    // 点击分配角色
    async setRole (UserInfo){
      this.UserInfo = UserInfo
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200){
        this.$message.error('获取角色列表失败')
      }
      this.rolesList = res.data
      console.log(this.rolesList)
      this.setRoleDialogVisible = true
    },
    // 点击确定按钮 分配角色
    async saveRoleInfo (){
      // 先判断用户是否分配了角色
      if (!this.selectedRoleId){
        return this.$message.error('请选择要分配的角色')
      }
      const { data: res } = await this.$http.put(`users/${this.UserInfo.id}/role`, {
        rid: this.selectedRoleId
      })
      console.log(res.data)
      if (res.meta.status !== 200){
        this.$message.error('分配角色失败')
      }
      this.$message.success('分配角色成功')
      this.getUserList()
      this.setRoleDialogVisible = false
    },
    // 监听分配角色对话框的关闭事件
    setRoleDialogClosed (){
      this.selectedRoleId = ''
      this.UserInfo = {}
    }
  }
}
     
</script>
<style lang="less" scoped>

</style>   
